JPH09130290A - Wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive the carrier signal of a transmitted wave in a short time by generating out a modulated signal according to the set carrier signal to be switched at regular time intervals and demodulating that modulated signal according to a carrier signal set by a reception part. SOLUTION: An interruption signal is inputted to a signal processing part 10 by a push button switch 16, prescribed display is performed on an alarm/ display part 11, and transmission data are outputted to a modulating processing part 14. In this case, the modulated signal is generated by the set carrier signal, which is switched at regular time intervals, from a transmission channel scanning part 13 and outputted as a modulated wave from a wireless transmission part 15. When a wireless reception part 25 receives the transmitted wave, that signal is demodulated by a demodulating processing part 24 according to the set carrier signal, which is to be switched, from a reception channel scanning part 23 and inputted to a signal processing part 20. In this case, communication information is stored in a communication information register memory 22 and displayed on an alarm/display part 21. Thus, the carrier signal of transmission wave is found out in a short time and repeated transmission is not required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system, and more particularly to a security system,
The present invention relates to improvement of a wireless communication system applied to a telemeter system, a telecon system, and the like.

[0002]

2. Description of the Related Art A wireless communication system of this type comprises a wireless transmitter and a wireless receiver,
Data communication is performed by receiving a wireless signal, which is modulated by a predetermined carrier signal in a wireless transmitter and output, by a wireless receiver and demodulating it by a carrier signal having the same frequency.

In addition, such a wireless communication system includes a so-called multi-scan type wireless communication system which performs wireless communication using a plurality of frequency bands. A multi-scan wireless communication system is a wireless transmitter that switches multiple carrier signals in time division to modulate transmission data, while a wireless receiver that receives this modulated wave switches carrier signals in time division. , Receives transmission data from a wireless transmitter by scanning for all receivable frequencies.

In the case of this multi-scan type wireless communication system, since a plurality of frequencies are scanned and a vacant frequency is found to perform wireless communication, communication errors due to noise and interference can be reduced.

[0005]

However, in the case of a wireless communication system that uses a single frequency channel and is capable of selecting and using a specific frequency channel from a plurality of frequency channels, the wireless communication system In order to match the carrier signal of the transmitter with the carrier signal of the wireless receiver, it is necessary to provide a dip switch on both the wireless transmitter and the wireless receiver and set a communication channel on both. Therefore, there is a problem in that this setting operation is complicated and the provision of the dip switch makes the wireless receiver expensive.

Further, in a multi-scan type wireless communication system in which a wide range of frequencies can be used, the wireless receiver needs to scan a wide range of frequencies, and it is necessary to find a transmission wave from the wireless transmitter. Since it takes time, it was necessary to repeatedly transmit from the wireless transmitter. As a method of solving such a problem, a DIP switch may be provided in the wireless receiver to limit the range of frequencies scanned by the wireless receiver. However, even when such a method is adopted, there is a problem that the setting work becomes complicated and the provision of the DIP switch makes the wireless receiver expensive.

The present invention has been made in view of the above circumstances, and an object thereof is to provide at low cost a wireless communication system in which a frequency channel used by a wireless receiver can be set easily and reliably.

[0008]

A wireless communication system according to the present invention as set forth in claim 1 is based on a wireless transmitter for transmitting communication control data including an ID code and an ID code included in the received communication control data. A wireless communication system configured by a wireless receiver that operates in accordance with the above, wherein the wireless transmitter is configured as means for sequentially switching and modulating a plurality of predetermined frequency channels, and transmitting communication control data. The wireless receiver is configured as means for sequentially demodulating and demodulating a plurality of predetermined frequency channels to receive communication control data, and the frequency of the wireless receiver is based on channel information included in the communication control data. It is configured to set a channel.

A wireless communication system according to a second aspect of the present invention is the wireless communication system according to the second aspect, wherein the wireless transmitter sequentially switches a carrier signal to a plurality of preset frequency channels. The transmission channel scanning means and the wireless modulation transmission means for modulating and transmitting the communication control data by the carrier signal from the transmission channel scanning means are provided, and the communication control data includes an ID code of the wireless transmitter and channel information. And the wireless receiver demodulates the received signal into communication control data by the receiving channel scanning means for sequentially switching the carrier signal to a plurality of preset frequency channels and the carrier signal from the receiving channel scanning means. Wireless reception and demodulation means and wireless It is demodulated by the signal demodulating means,
A communication information registration memory for registering the retrieved ID code and channel information, and a reception channel setting means for setting a frequency channel to be scanned by the reception channel scanning means based on the channel information registered in the communication information registration memory. And is configured.

A wireless communication system according to a third aspect of the present invention is the wireless communication system according to the second aspect, wherein the wireless receiver includes a mode changeover switch for switching between a normal mode and a registration mode, When the setting is switched to the registration mode, the wireless reception demodulation means registers the channel information extracted by demodulating the communication control data in the communication information registration memory, and the reception channel setting means is registered. The frequency channel to be scanned by the receiving channel scanning means is set based on the channel information.

According to a fourth aspect of the present invention, there is provided a wireless communication system according to the second aspect, wherein the wireless receiver has a registration mode setting switch for switching a normal mode to a registration mode.
A registration timer for switching to the normal mode after a lapse of a predetermined time from switching to the registration mode, and when the switching to the registration mode is set, the wireless reception demodulation means demodulates the communication control data and extracts the channel information. Is registered in the communication information registration memory, and the reception channel setting means sets the frequency channel to be scanned by the reception channel scanning means based on the registered channel information.

According to a fifth aspect of the present invention, there is provided a wireless communication system according to the second aspect, wherein the wireless transmitter has predetermined frequency channels which can be scanned by the transmission channel scanning means. , And a transmission channel selection setting means for selecting and setting a frequency channel from these frequency channels.

A wireless communication system according to a sixth aspect of the present invention is the wireless communication system according to the second aspect, wherein the channel information of the communication control data indicates the number of channels scanned by the transmission channel scanning means. It is configured to include the indicated channel number code. A wireless communication system according to the present invention described in claim 7 is the wireless communication system according to claim 2 or 6, wherein the channel information of the communication control data is a system code indicating a type of a wireless transmitter,
And a channel code indicating a combination of channels scanned by the transmission channel scanning means.

A wireless communication system according to the present invention described in claim 8 is the wireless communication system according to claim 5 or 7, wherein the wireless transmitter includes a system code included in channel information of communication control data. Is further provided with a type setting means for selectively setting. The wireless communication system according to the present invention as set forth in claim 9 is the wireless communication system as set forth in claim 2, wherein the wireless receiver has a type setting for selectively setting the type of the wireless transmitter to be registered. It further comprises means.

[0015]

FIG. 1 shows an example of the configuration of a wireless transmitter used in a wireless communication system according to the present invention. The wireless transmitter 1 includes a signal processing unit 10 and
Notification / display unit 11, memory unit 12, transmission channel scanning unit 13, modulation processing unit 14, and wireless transmission unit 1
5 and a push button switch 16.

When the push button switch 16 is operated, an interrupt signal is input to the signal processing unit 10. Signal processing unit 10
Is a circuit that performs processing based on the program stored in the memory unit 12. When an interrupt signal is input by operating the push button switch 16, the interrupt signal is detected and the notification / display unit 11 issues a predetermined alarm. , And the like, and outputs the transmission data to be wirelessly transmitted to the modulation processing unit 14. The modulation processing unit 14 modulates the transmission data with the carrier signal from the transmission channel scanning unit 13, and the modulation signal generated in this way is transmitted to the wireless transmission unit 15.
Is input to and output from the wireless transmission unit 15 as a modulated wave.

For example, when the wireless transmitter 1 is a fire alarm and the push button switch 16 is a fire alarm button, operation of the push button switch 16 causes a fire bell as the notification / display unit 11 to ring. , The fire signal is output as a wireless signal. It should be noted that the push button switch 16 may be configured by a smoke sensor or the like in the case of a fire detector or the like.

The transmission channel scanning section 13 is a circuit for generating a carrier signal for modulation processing, and outputs it to the modulation processing circuit 14 while scanning a plurality of preset frequency channels. That is, the carrier signals are switched at regular intervals, and a plurality of carrier signals are sequentially output. Therefore, the wireless transmitter 1 is a multi-scan type wireless transmitter in which the carrier signal of the output modulated wave sequentially changes in a plurality of preset frequency channels.

Next, FIG. 2 shows a structural example of a wireless receiver used in the wireless communication system according to the present invention. The wireless receiver 2 includes a signal processing unit 20, a notification / display unit 21, a communication information registration memory unit 22, a reception channel scanning unit 23, a demodulation processing unit 24, a wireless reception unit 25, and a mode setting unit. And 26.

The mode setting unit 26 is used by the wireless receiver 2
Is an input means for selecting the operation mode of. When the wireless reception unit 25 receives the transmission wave output from the wireless transmitter 1 when the normal mode is set by the operation of the mode setting unit 26, the reception signal is output to the demodulation processing unit 24. The demodulation processing unit 24 demodulates the received signal into the original transmission data.

The demodulation processing unit 24 demodulates the received signal by the carrier signal from the reception channel scanning unit 23, and the transmission data restored in this way is input to the signal processing unit 20. The signal processing unit 20 stores the communication information included in this transmission data in the communication information registration memory 22 and, based on this transmission data, the notification / display unit 2
According to 1, a predetermined alarm is issued and displayed.

The reception channel scanning section 23 is a circuit for generating a carrier signal for demodulation processing, and outputs it to the demodulation processing circuit 24 while scanning a plurality of preset frequency channels. That is, the carrier signals are switched at regular intervals, and a plurality of carrier signals are sequentially output. Therefore, the wireless receiver 2 is a multi-scan wireless receiver that finds and demodulates the carrier signal of the received modulated wave if the carrier signal of the received modulated wave matches any one of the predetermined frequency channels. .

In the case of a wireless communication system composed of the multi-scan type wireless transmitter shown in FIG. 1 and the multi-scan type wireless receiver shown in FIG. 2, the reliability of a plurality of carrier signals is high. Can communicate. Next, the wireless communication system according to the present invention described in claims 1, 2 and 3 will be described below. 300 to 313 of FIG. 3 are flowcharts showing an example of the operation of the wireless receiver 2 in this wireless communication system.

First, the operation mode is set by the mode setting unit 26 of the wireless receiver 2 (300). The mode setting unit 26 as a mode switching unit includes a push button switch,
It is constituted by a manual switching means such as a slide switch, and the mode setting unit 26 can select one of the registration mode, the normal mode and the erasing mode. When the registration mode is set, the wireless receiver 2 starts scanning a plurality of predetermined channels (302). In this state, if the wireless transmitter 1 outputs the communication control data including the ID code and the channel information as a transmission wave, the wireless receiver 2 receives the transmission wave and demodulates it.

The signal processing section 20 of the wireless receiver 2 is
From the communication control data included in the reception data after the demodulation processing, the ID code and channel information of the wireless transmitter 1 that is the transmission source are extracted, and the communication information registration memory 2
2 (303). Further, the signal processing unit 20 as the reception channel setting means sets the frequency channel to be scanned by the reception channel scanning means 23 based on the information stored in the communication information registration memory 22 (3
04).

When registering a plurality of wireless transmitters 1, the scan is started (302), stored in the information registration memory (303), and the frequency channel is set (304).
When the registration for all the required wireless transmitters 1 is completed (301), the registration mode is ended and the mode is changed to the normal mode. Next, when the mode setting unit 26 is operated to set the normal mode or when the mode is changed to the normal mode after the registration mode ends, the communication information registration memory 22 of the wireless receiver 2 has at least one wireless unit. It is checked whether the receiver 1 is registered (305). If no wireless transmitter 1 is registered in the wireless receiver 2, since no frequency channel is set in the reception channel scanning unit 23, the communication operation (307, 308) originally in the normal mode is performed. Since it cannot be done, an error is output (30
6).

If the wireless transmitter 1 is registered,
The reception channel scanning unit 26 starts scanning for the plurality of channels set in the registration mode (307). Then, when a transmission wave from any of the wireless transmitters 1 registered in the wireless receiver 2 is received, the notification / display unit 26 performs a predetermined notification, display, etc. based on the received data (308). ). In the normal mode, such scan (307), notification / display (30
8) is repeated. That is, the normal mode is a mode in which the transmitted wave from each wireless transmitter 1 is monitored and a predetermined display is made based on the received data.

Further, even when the mode setting unit 26 is operated to set the erase mode, it is determined whether or not at least one wireless receiver 1 is registered in the communication information registration memory 22 of the wireless receiver 2. Inspect (309).
If no wireless transmitter 1 is registered in this wireless receiver 2, the registration cannot be deleted.
An error is output (310).

If the wireless transmitter 1 is registered,
The reception channel scanning unit 26 starts scanning for the channel set in the registration mode (31
1). In this state, if the transmission wave including the communication control data is output from the wireless transmitter 1 registered in the communication information registration memory 26 and the wireless transmitter 1 to be deleted from the communication information registration memory 26, the wireless reception is performed. The device 2 receives and demodulates this transmitted wave.

The signal processing section 20 of the wireless receiver 2 is
The ID code of the wireless transmitter 1 that is the transmission source is extracted from the communication control data included in the reception data after the demodulation process, and the information having the matching ID code is deleted from the communication information registration memory 22 (312). Then, the signal processing unit 20 as the receiving channel setting unit resets the frequency channel to be scanned by the receiving channel scanning unit 23 based on the information stored in the communication information registration memory 22 (313).

When deleting the registration of a plurality of wireless transmitters 1, the number of registered devices is inspected (309), the scan is started (311), the information is deleted from the information registration memory (312), and the frequency channel is reset (313). Repeat. As described above, in the wireless communication system according to the present invention, when the frequency channel used by the wireless transmitter 1 is set in the wireless receiver 2, the ID code and the ID code from the wireless transmitter 1 are registered in the registration mode or the deletion mode. This is performed by transmitting communication control data including channel information.

Therefore, when setting the frequency channel used by the wireless transmitter 1 in the wireless receiver 2,
Compared with the method of directly setting the frequency, the setting operation is simplified, the setting work at the time of system construction is significantly reduced, and addition, deletion or change of the wireless transmitter 1 can be easily coped with. . Further, after setting the frequency channel, in the normal mode, the reception channel operation unit can receive the transmission data from all the wireless transmitters by scanning only the necessary frequency channel.

Therefore, the carrier signal of the transmitted wave can be found in a shorter time as compared with the case of scanning the entire receivable frequency range, and it is not necessary to repeatedly transmit the carrier signal from the wireless transmitter. , Can perform efficient wireless communication. Here, in a system that performs wireless communication using a single frequency channel, the scanning operation of the wireless receiver 2 is required only in the registration mode, and in the normal mode and the erase mode, the wireless operation using the single frequency channel is performed. Will communicate.

That is, when the registration mode is set, the wireless receiver 2 starts scanning a plurality of predetermined channels in the same manner as described above (302), and from the communication control data, the ID code and the channel are obtained. The information is retrieved and stored in the communication information registration memory 22 (30
3). At this time, when only a single frequency channel is registered and the normal mode is set, the scan operation (307) is unnecessary, and only the single frequency channel registered in the communication information registration memory 22 is monitored. . Similarly, in the erase mode, the scan operation (31
1) is unnecessary, and only the registered single frequency channel will be monitored.

Next, a wireless communication system according to the present invention described in claim 4 will be described below. The mode setting unit 26 of the wireless receiver 2 of this system includes a mode setting switch and a registration timer.
The mode setting switch is a switching means for switching and setting each operation mode, and the registration timer starts a time measurement by switching to the registration mode, and switches to the normal mode after a lapse of a predetermined time. Is. The above-mentioned predetermined time measured by the timer circuit is a time sufficient for registration of the wireless transmitter.

That is, by operating the mode setting switch,
When switching to the registration mode and registering the wireless transmitter, after the registration is complete, the registration mode will be automatically set after the lapse of a predetermined time without having to set the normal mode again by operating the mode setting switch. To normal mode. Therefore, the setting work at the time of system construction can be facilitated, and the problem that the worker forgets to set the normal mode and does not operate normally can be prevented. The setting switch for setting the registration mode may also be used as the power switch.

Next, a wireless communication system according to the present invention described in claim 5 will be described below. FIG.
FIG. 3 is a diagram showing a configuration example of a wireless transmitter 1a used in this wireless communication system. This wireless transmitter 1a is the wireless transmitter 1 shown in FIG.
In addition, a channel selection setting means 17 is further provided.

The channel selection setting means 17 is a setting means for selecting the frequency channel used in the wireless transmitter 1a from the predetermined frequency channels. This channel selection setting means 17
The transmission channel operating unit 13 switches and outputs the carrier signal of one or more frequencies selected and set by the transmission processing operation unit 14.

For example, when the frequency used for wireless communication is a frequency band called a specific low power radio frequency, the usable frequency is stipulated by law according to the purpose of use of the wireless communication system. ing. For this reason, the frequency channels defined by law are stored in advance, and the frequency to be scanned and transmitted by the wireless transmitter is selected and set from among them.

Therefore, when setting the frequency used by the wireless transmitter, the setting operation becomes easier than the case of setting the frequency directly, and a frequency outside the predetermined frequency range is set by mistake. This can be prevented, and the setting work at the time of system construction can be performed easily and reliably. Next, the wireless communication system according to the present invention described in claims 6 and 7 will be described below. FIG. 5 is a diagram showing a configuration example of communication data modulated and transmitted from the wireless transmitter 1. This communication data is composed of communication control data, an ID code, and output control data.

The ID code is a unique code number given to each wireless transmitter 1 for identifying each wireless transmitter 1. The output control data is data indicating the original communication content to be transmitted from the wireless transmitter 1 to the wireless receiver 2. The communication control data is
It is information about a communication channel, and is composed of system data, channel number data, and frequency channels. The system data is data that indicates the type of the wireless transmitter 1 and is configured by 3 bits. For example, “001” for the security system, teleconverter /
It is "010" for the telemeter system.

The channel number data is data of the number of frequency channels used by the wireless transmitter 1, which is composed of 3 bits. For example, when only one channel is used, “001” is used and two channels are used. In the case of alternate scanning, it is "010", and in the case of the multi-scan method using three channels, it is "011".

The channel code is data which is composed of 6 bits and which encodes a combination of frequency channels used by the wireless transmitter 1. By this encoding,
The amount of data to be transmitted can be reduced. Especially,
By encoding this channel code together with the system code and the channel number data, the data amount can be greatly reduced. That is, even if the frequency channels are the same, if the system code or the channel number data is different, different frequency combinations can be specified. Can be expressed.

In the registration mode, when the modulated wave including the ID code and the communication control data is output from the wireless transmitter 1, the wireless receiver 2 receives and demodulates the modulated wave, and then the wireless transmitter 2 receives the modulated wave. The frequency channel 1 is decoded and stored in the communication information registration memory 22 together with the ID code. The wireless receiver 2 has a communication control table showing the relationship between communication control data and frequency channels, and the signal processing unit 20 decodes the frequency channels based on this communication control table.

For example, the channel number code is "01".
0 ”, that is, when the number of channels is 2,
If the channel code is "000001", channel 1
And channel 25, the channel code is "00001
If it is "0", it becomes channel 2 and channel 26. However, when the channel number code is "011", that is,
If the number of channels is 3, and the channel code is "000001", the channel number is 1, channel 17, channel 33, and the channel code is "000010".
If so, the channel number becomes different from that of the channel 2, the channel 18, and the channel 34.

Furthermore, the correspondence relationship between these channel numbers and the frequencies of carrier signals differs depending on the type of system. That is, in the case of the security system (the system code is "001") and the case of the teleconverter / telemeter system (the system code is "010"), the corresponding frequencies are different even if the channel code is the same. By performing such encoding, the communication control data is reduced and the amount of data to be transmitted is reduced, while the wireless receiver is provided with a communication control table and the communication control data is decoded to The processing can be simplified and speeded up. Also, by including the channel number code in the communication control data, the processing by the software of the wireless receiver in the registration mode is facilitated.

A wireless communication system according to the present invention as defined in claim 8 will be described below. FIG. 6 is a diagram showing a configuration example of the wireless transmitter 1b of the wireless communication system. The wireless receiver 1b is configured by further providing the type setting means 18 to the wireless transmitter 1a shown in FIG. The type setting unit 18 is a setting unit for selecting the type of the wireless transmitter 1b, and the signal control unit 10 includes the system included in the communication control data based on the type set by the type setting unit 18. Determine the code.

When the wireless transmitter 1 is equipped with the channel selection setting means 17 shown in FIG. 4,
By limiting the frequency channels selectable by the channel selection setting means 17 to the frequency channels corresponding to the set type, the frequency channel selection setting can be facilitated. A wireless communication system according to the present invention as defined in claim 9 will be described below. FIG. 7 is a diagram showing a configuration example of the wireless receiver 2a of the wireless communication system. This wireless receiver 2a is configured by further providing the type setting means 27 to the wireless receiver 2 shown in FIG.

The type setting means 27 is a setting means for selecting the type of wireless transmitter to be registered in the wireless receiver 2a. When the type of the wireless transmitter is designated by the type setting means 27, the frequency channels scanned by the reception channel scanning unit 23 in the registration mode are limited to the frequency channels corresponding to the type, and only these frequencies are scanned. Then, the modulated wave from the wireless transmitter can be received and demodulated.

That is, in the registration mode, the signal control unit 20 limits the frequency channels to be scanned by the reception channel scanning unit 23 based on the type set by the type setting means 27, and the limited frequency channels. Scan only for.

[0051]

In the wireless communication system according to the present invention as set forth in claim 1, in the registration mode, the wireless transmitter receives the modulated wave of the communication control data emitted from the wireless transmitter. Then, the ID code and the channel information are extracted from the communication control data and registered in the communication information memory, and the receiving channel setting means scans the receiving channel scanning means on the basis of the channel information registered in the communication information memory. Set the frequency channel to be used.

In the normal mode after such frequency channel setting, the wireless receiver performs wireless communication with all the registered wireless transmitters by scanning only the set frequency channel. be able to. Therefore, the setting operation when setting the frequency channel used by the wireless transmitter to the wireless receiver is simplified, and the setting work at the time of system construction is significantly reduced, and addition, deletion or modification of the wireless transmitter is performed. Can be easily dealt with.

Further, in the multi-scan type wireless communication system, the carrier signal of the transmission wave can be found in a shorter time as compared with the case of scanning the entire receivable frequency range, and the wireless transmitter can repeatedly detect the carrier signal. Efficient wireless communication can be performed without the need to repeatedly transmit. In the wireless communication system according to the present invention as set forth in claim 3, when the wireless receiver is switched to the normal mode or the registration mode by operating the mode selection switch, and is set to be switched to the registration mode, The wireless reception demodulation means registers the channel information extracted by demodulating the communication control data in the communication information registration memory, and the reception channel setting means operates the reception channel scanning means based on the registered channel information. Set the frequency channel to scan.

That is, it is possible to switch between the normal mode and the registration mode by operating the mode selector switch,
By switching to the registration mode, the channel information of the wireless transmitter can be registered. In the wireless communication system according to the present invention as set forth in claim 4, the wireless receiver is operated by operating the mode changeover switch.
At the same time as switching from the normal mode to the registration mode, the registration timer starts measuring time, and automatically returns to the normal mode after a lapse of a predetermined time.

Therefore, the setting work at the time of constructing the system can be facilitated, and the problem that the worker forgets to set the normal mode and does not operate normally can be prevented. In the wireless communication system according to the present invention as set forth in claim 5, the wireless transmitter comprises a channel selection setting means, and the channel selection setting means selects from among predetermined frequency channels,
The frequency channel used in the wireless transmitter can be selected.

Therefore, when setting the frequency used by the wireless transmitter, the setting operation becomes easier than the case where the frequency is directly set, and a frequency outside the predetermined frequency range is erroneously set. This can be prevented, and the setting work at the time of system construction can be performed easily and reliably. In the wireless communication system according to the present invention as set forth in claim 6, the channel information of the communication control data transmitted from the wireless transmitter includes a channel number code indicating the number of channels scanned by the transmission channel operating means. .

That is, by including the number of channels to be received and processed by the wireless receiver in the communication control data, the software processing of the wireless receiver in the registration mode is facilitated. In the wireless communication system according to the present invention as set forth in claim 7, the channel information of the communication control data transmitted from the wireless transmitter includes the system code indicating the type of the wireless transmitter and the respective channels scanned by the transmission channel scanning means. And a channel code indicating a combination.

This channel code is data that encodes a combination of frequency channels used by the wireless transmitter. This encoding can reduce the amount of data to be transmitted. In particular, when the channel code is encoded, it is encoded together with the system code and the channel number code to reduce communication control data and reduce the amount of data to be transmitted.

On the other hand, since the wireless receiver is provided with the communication control table and decodes the communication control data, the processing by software can be simplified and speeded up. In the wireless communication system according to the present invention as set forth in claim 8, the wireless transmitter includes a type setting means, and the system code included in the channel information of the communication control data can be selectively set by the type setting means.

Therefore, the type of the wireless transmitter can be easily set, and the hardware of the wireless transmitter can be shared. When the wireless transmitter is provided with the channel selection setting means, the frequency channels selectable by the channel selection setting means are limited to the frequency channels corresponding to the set type, and the frequency channel selection setting is performed. Can be facilitated.

In the wireless communication system according to the present invention described in claim 9, the wireless receiver is provided with the type setting means, and the type of the wireless transmitter to be registered can be selectively set. Therefore, after making the hardware of the wireless receiver common, the wireless receiver can be selectively set according to the purpose of use, that is, the wireless transmitter to be registered.

By specifying the type of the wireless transmitter to be registered by the type setting means, the frequency range to be scanned by the receiving channel scanning means in the registration mode is the frequency of the wireless transmitter of the set type. Since it is limited to channels, it is possible to improve the efficiency of registration work.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a wireless transmitter used in a wireless communication system according to the present invention.

FIG. 2 is a diagram showing a configuration example of a wireless receiver used in a wireless communication system according to the present invention.

FIG. 3 is a flowchart showing an example of the operation of the wireless communication system according to the present invention described in claims 1 and 2. It is the figure which showed one structural example of the wireless receiver.

FIG. 4 is a diagram showing a configuration example of a wireless transmitter used in the wireless communication system according to the present invention as defined in claim 5;

FIG. 5 is a diagram showing an example of communication control data of the wireless communication system according to the present invention as set forth in claims 6 and 7;

FIG. 6 is a diagram showing a configuration example of a wireless transmitter used in the wireless communication system according to the present invention as set forth in claim 8;

FIG. 7 is a diagram showing a configuration example of a wireless receiver used in the wireless communication system according to the present invention according to claim 9;

[Explanation of symbols]

 1, 1a, 1b ... Wireless transmitter 2, 2a ... Wireless receiver 10 ... Reception channel setting means 13 ... Transmission channel scanning means 14, 15 ... Wireless modulation transmission means 17 ... Transmission channel selection setting means 18 ... Type setting means 22 ... Communication information registration memory 23 ... Reception channel scanning means 24,25 ... Wireless demodulation receiving means 26 ... Mode setting switch 27 ... Type Setting means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Murao 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (9)

[Claims] 1. A wireless communication system comprising a wireless transmitter for transmitting communication control data including an ID code and a wireless receiver operating based on the ID code included in the received communication control data. The transmitter is configured as means for sequentially switching and modulating a plurality of predetermined frequency channels to transmit communication control data, and the wireless receiver sequentially switching a plurality of predetermined frequency channels for demodulation. A wireless communication system configured as means for receiving communication control data, wherein a frequency channel of a wireless receiver is set based on channel information included in the communication control data. 2. The wireless communication system according to claim 1, wherein the wireless transmitter comprises: a transmission channel scanning means for sequentially switching a carrier signal to a plurality of preset frequency channels; and a carrier signal from the transmission channel scanning means. Wireless modulation transmitting means for modulating and transmitting the communication control data according to the above, wherein the communication control data is configured to include an ID code of the wireless transmitter and channel information, and the wireless receiver pre-receives the carrier signal. Reception channel scanning means for sequentially switching to a plurality of set frequency channels, wireless reception demodulation means for demodulating the received signal into communication control data by the carrier signal from the reception channel scanning means, and demodulation by the wireless reception demodulation means. , The extracted ID Communication information registration memory for registering the channel and channel information, and reception channel setting means for setting the frequency channel to be scanned by the reception channel scanning means based on the channel information registered in the communication information registration memory. A wireless communication system characterized by the above. 3. The wireless communication system according to claim 2, wherein the wireless receiver includes a mode changeover switch for switching between a normal mode and a registration mode, and the wireless receiver is set in the registration mode. The reception demodulation means registers the channel information extracted by demodulating the communication control data in the communication information registration memory, and the reception channel setting means scans the reception channel scanning means based on the registered channel information. A wireless communication system characterized by setting a frequency channel to be used. 4. The wireless communication system according to claim 2, wherein the wireless receiver switches a normal mode to a registration mode and a registration mode setting switch, and switches to the normal mode after a lapse of a predetermined time from the switching to the registration mode. A registration timer, and when the switching mode is set to the registration mode, the wireless reception demodulation means demodulates the communication control data and registers the extracted channel information in the communication information registration memory, and the reception channel setting means. The wireless communication system, wherein the frequency channel to be scanned by the reception channel scanning means is set based on the registered channel information. 5. The wireless communication system according to claim 2, wherein the wireless transmitter has predetermined frequency channels that can be scanned by the transmission channel scanning means, and selects a frequency channel from these frequency channels. A wireless communication system comprising transmission channel selection setting means for setting. 6. The wireless communication system according to claim 2, wherein the channel information of the communication control data includes a channel number code indicating the number of channels scanned by the transmission channel scanning means. And wireless communication system. 7. The wireless communication system according to claim 2, wherein the channel information of the communication control data is a combination of a system code indicating the type of a wireless transmitter and each channel scanned by a transmission channel scanning means. And a channel code indicating that the wireless communication system. 8. The wireless communication system according to claim 5, wherein the wireless transmitter further comprises a type setting means for selectively setting a system code included in channel information of communication control data. A wireless communication system comprising: 9. The wireless communication system according to claim 2, wherein the wireless receiver further comprises type setting means for selectively setting the type of the wireless transmitter to be registered. And wireless communication system.